Hydraulic conveyer.



No. 890,139. PATEN'I'BD JUNE 9, 1908. I.. H. GRIFFITH.

HYDRAULIC CONVEYBR.

APPLIOATION FILED JUNE 24. 1907.

LUTHER H. GRIFFITH, O

F SEATTLE, WASHINGTON.

-HYDRAULIC CONVEYER.

Specication of Lettera Yatent.

Patented J' une 9, 190e.

Application filed June 24, 1907. Serial No. 380,612.

To all whom 'it may concern.'

Be it known that I, LUTHER H. Gmrrirn, a citizen of the United States, residing at Seattle, in the county of King and State ofA Washington, have invented certain new and useful Improvementsl in Hydraulic Conveyers, of which the following 1s a specification, reference being had therein to the accompan ing drawings.

T iis invention relates to improvements in hydraulic conveyers. v

T he principal object of the invention is the )revision of means whereby a single pipe line is capable of receiving charges of excavated material at various points throughout its length without resorting to open sluiceways where the water pressure is not so efl'ective as in pipes and unavailable where a conveyer is to be laid in ascending slopes toward the delivery end.

A further object is the provision of means su )plementing the power of a main streamin a hydraulic conveyer in order to add to the force of the latter in situations where the duty is excessive and also to compensate for the retarding effect ensuing from the supply of fresh charges of excavated material intermediate the length of the pipe line.

With these and other ends in view the invention consists in the novel construction,

adaptation and combination of devices, as

will be hereinafter described and claimed.

In the drawings, where similar reference characters designate corresponding parts in all of the views, Figure 1 is a plan view of devices embodying my invention and shown applied to a pipe conduit; Fig. 2, an end view of the same; and Fig. 3 is a longitudinal sectional view.

The numeral 5 represents a pipe of suitable size and materialy for `conveying excavated earth through the agenc f of a stream of water. Att the top of the pipe is an aperture 6 through which is protruded the deiivery end of the charging hopper 7 and a water injection nozzle 8.

The hopper is formed adjacent of its bottom with marginal flanges 9 which are curved or otherwise formed upon their undersides to conform with the peripheral surface of the pipe. At the lower forward end of the hopper is an o ening 1() through which charges of dirt are deposited from the hopper into the pipe, and provided for such opening is a gate 11 adapted to be adjusted to close the opening, more or less, according to the quantity and character of the material which is yto be supplied therethrough. This gate .is desirab y seated upon the sloping front wall 7 of the hopper and is retained against being unseated by having its lateral edges housed in guideways formed by strips 12. The openin(1r and closing movements of the gate are e ected by a screw 13 rotatably mounted in bearings 14 of thehopper and engages a female screw provided in a lug 11 formed or provided on the gate and extending through an elongated slot 15 of said hop )er wall. The said injection nozzle is screwed upon or otherwise detachably connected to a centrally disposed branch 16 of passageways 16 ro vided to the rear of the sloping back wall 7 of the hop )er, and such passageways extend transverseiy through the side wall 7 where they terminate in screw threaded bosses 17. These bosses are adapted for connection by suitable coupling with lengths of hose which lead from a source of water supply; or where one or both of the bosses are not to be utilized, a cap, such as 18, Fig. 2, maly be used to close the same.

he operation of plained as follows: Assuming that the pipc 5 is being em )loyed in conveying dirt therethrough by the agency ot' water and in the direction indicated by the arrow Y in Fig. 3 by charging the hopper 7 with dirt and opening the gate 11 the dirt will be deposited within the )ipe and in so doing encounters the water which is injected through the nozzle 8, whereby it is impelled forwardly without retarding the ilow ensuing within the pipe. The water thus injected also assists the ower already acting within the pipe to acce crate the motion and may be resorted to in such a capacity even when no dirt is being fed through the hopper, as may oftentimes be done when the work is excessive and in places where the )ipe as laid inclincs upwardly toward its de ivery end. Y

What I claim as my invention, is-

1. The combination with a plpe and a hopper having a discharge opening communicatmg with the interior of t 1c pipe, of means to close such opening, and means for introducing a jet of water within the pipe and to the rear of said opening.

2. The combination with a pipe, of a hopper provided with an opening in its bottom, a gate for closing said opening, means for adjustably moving said gate, a nozzle arranged within the pipe and directed across the bottom of the hop er opening, and means communicatin wlt said nozzle for conducting water to t e latter. l

3. The combination with a pipe, of a hopper provided with an opening in its bottom, a gate for closing said opening, said gate being provided with an internally threaded lug'; a screw engaging saidnlug, a nozzle arran'gedl within the ipe and directed across the bottom of the op er opening, and means communicating w1t said nozzle for conducting water tothe latter.

4. The-combination with a pipe conveyer, of a hopper mounted `thereon and having a discharge opening through which excavated l5 material is deposited Within the pipe, and means carried y the hopper for introducing a jetof Water'wlthi'n the i e. A

In testimony whereof lpalflx my signature in presence of 4tWoi Witnesses.

i LUTHER H. GRIFFITH. Witnesses:

PIERRE BARNES, E. H. ALvoRD. 

